package cn.tedu;

import java.sql.*;

public class Demo03 {
    public static void main(String[] args) throws SQLException {
        //获取连接对象
        Connection conn = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/empdb?characterEncoding=utf8&serverTimezone=Asia/Shanghai&useSSL=false",
                "root","root");
        //创建执行SQL语句对象
        Statement s = conn.createStatement();
        //执行插入数据的SQL语句
       // s.execute("insert into emp(name) values('Tom')");
        //执行修改数据的SQL语句
      //  s.execute("update emp set name ='Jerry'");
        //执行删除数据的SQL语句
      //  s.execute("delete from emp where name='Tom'");
        ResultSet rs = s.executeQuery("select * from emp");
        while (rs.next()){
            String name =rs.getString("name");
            double sal =rs.getDouble("sal");
            System.out.println(name+":"+sal);
        }
        conn.close();
        System.out.println("执行完成!");

    }
}
